Centrifugal cream-separator.



Patented vMay 22, |900.`

mi., smoes.

y o. oHLssoN. CENTBIFUGAL BEAMISEPABATOB.

(Appnion med Der. a, 189e.)

i (No Model.)4

5 Sheets- Shut l.

' ATTORNEYJf v (no Model.)

Patented May V22, 1900. 0. OHLSSON.

GENTBIFUGAL CREAM SEPARTOB.

' (Application led Dec. 5, 1896.) I

5 Sheets-Sheet 2 ATTORNEY No. 650,068. Patented May 22, |900.

o. uHLssoN.-

v CENTRIFUGAL CREAM SEPARATOR.

(Appumion filed Dc. 5, 1891;.)1' (No Model.) 5 Sheets-Sheet 43.

INVENTOR Patented May 227 1900.

o. uHLssoN. CENTHIFUGAL CREAM SEPABATOR.

5 Sheets Sheet 4l (Application tiled Dec, 5, 1896.) (N o M o d e l will INVENTOR GMM WITNESSE ATTORNEYA n: Nanms ames co. vrcoTaLmco.. wAsnwsmN, u. L.

No. 650,068. 'Patented-May 22;"'I90.

0. HLSSUN.

` GENTBIFUGA-L CREAM SEPARTOB.

(Appueatinn med Inu-n 5, 1696.) (No Model.) 5v Sheets-Sheet 5.

INVENTOR @MAM moana :rens cu. momumo., wAsHlNsToN. o. c. 'l

WITNESSES UNITED STATES PATENT GEEICE.

OLOF OHLSSON, OF NEWARK, NEW JERSEY.

CENTRIFUGAL CREAM-SEPARATOR.

SPECFICATON forming part of Letters Patent No. 650,068, dated May 22, 1900.

` Application filed December 5, 1896l Serial No. 614,599. (No model.)

To @ZZ whom it may concern: a

Be it known that I, OLCF OHLSSON, a citizen of the United States, and a resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful improvements in Centrifugal Creaming-Machines, of which the following is a l specification.

The present invention has reference to that class of centrifugal creamers in which the body of liquid in the liquid-space of the bowl instead of being left to the sole action of the centrifugal force is more or less interfered with or guided in its movements by the presence of plates or obstructions in said liquidspace; a-nd it has for its object to so modify the character and arrangemeut'of said internal plates or obstructions as to increase the creaming efciency of the machine, while at the same time simplifying the internal construction and facilitating balancing and cleaning.

The invention consists of the devices and combinations herein set forth.

Heretofore it has been common to employ in the liquid-space of the bowl plates or par.

titons which are arranged radially. It has also been common to employ in the liquidspace of the bowl plates or partitions which cut obliquely a plane containing the axis of the bowl; but in lall such cases such partitions have not cut obliquely a plane passing at right angles through the axis of the bowl. It has also been common to employ internal partitions in the liquid-space of the bowl, which cut obliquely a plane passing at right angles through the axis of the bowl; but in all such cases the said partitions have not cut obliquely a plane containing the axis of thev bowl. In the present construction the internal plate or partition or plates or partitions inthe liquid-space of the bowl is or are so arranged as to have a substantially-'plane portion which cuts obliquely a plane containing the axis of the bowl and also cuts obliquely a plane passing through the axis of the bowl at a right angle.

In the accompanying drawings, which form a part hereof, Figure l is a sectional view of a centrifugal creamer embodying my invention in one of its simplest forms. Fig. 2 is a side view of the internal frame of the machine. Fig. 3 is a top view of same, and Fig.

` 4 a horizontal section on the line 4 4 of Fig. 2.

Fig. 'is a diagrammatic section of the inter- 55 nal frame of another form of machine embodying the invention. Figs. G and 7 are diagrams of modified forms of apparatus embodying the invention. Figs. 8 and 9 are side and topviews, respectively, of the inter- 6o nal frame of another form of machine embodying my invention. Fig. 10 is asectional view of still another modification.

` A is the centrifugal bowl. It has asuitable support B, through and by means of which it is rotated, and a suitable cover or top piece C, which carries or'furnishes the skim-milk outlet D and the cream-outlet E. The full-milkinlet device is shown at F, G, and H in the drawings. The full milk entering through 7o tube F spreads out in the bottom of the bowl under the false and removable bottom Gand rises up through a circle of holes H therein, being delivered there into the separating-chamber of the bowl at a point inside of the plates K and between the cream-wall and the periphery ofthe bowl. The false bottom G is secured totube F by a riveted wire G', which also at the same time, as shown, raises the false bottom G above the bottom of the bowl, 8o

thus permitting the full milk to iiow thereunder, as described.

In the liquid-space of theseparating-chams" ber of the bowl in the form of apparatus shown in Figs. l to 4, inclusive, is a remov 85 able frame consisting of three guiding-plates K, alternating with three curved pieces L, peripherally connecting the guiding-plates, braces M, and cover or top piece N. Each guiding-plate K is arranged in the liquid- 9o space of the bowl and separates the body of liquid that is radially outside of it from the body of liquid thatis radially inside of it, and a substantially-plane portion of each plate cutsobliquely a plane containing the axis of the bowl, as shown by the section of one of the plates K in Fig. 1, and also cuts obliquely a plane passing through the axis of the bowl at a right angle, as shown by the section of all three of the plates K in Fig. 4, roo which is a sectional view of the internal sepaa rating or skimming device or frame of the machine, taken in a plane at right angles to the axis of the bowl. Theplates K preferably extend from end to end of the bowl and may, as shown, extend horizontally from pe-A b.o.wl,on'e Vseries or line of openings along riphery. to periphery of the bowl and are slightlyfinclined to the axis of 'thebowl and extend, substantially, from top to bottom of the bowl within-the liquid-space of the'bowl.

The peripherally-connecting,pieces L are con` centricV with the bowl and serve to solidly connect the plates together at their peripheral edgesl into a'frame and to keep them ixed with respect to one another. These pieces may. beemployed or not and may be varied, as desired. -The braces M are to prevent the bulging or bending of the plates un-` derthe influence of -the centrifugal-force. They are secured to the plates, and they impinge against the inner wall of the bowlif and when the plates exhibit any tendency to bend outward under the centrifugal force, andtheythen prevent further bending. They may be employed or not, as desired. Each guiding -plate K has openings P along'its edges that are nearest to the periphery of the `eachsuch edge for theskim-milk. There is also an opening lR in the-fiat underside of the cover ortop piece N at or near the point of ,eachxguidi'ng-plateK Where it approaches nearest-tothe axis ofthe bowlufor the cream. The cover or top piece N of the internal frame is of the general conical shape ofthe cover-7C of the bowl, and it has an external circular shoulder S.

.Thefbowl A` has at its upper edgea Vseat for` arubber gasket or ring, as shown in Fig. ,1. T 1s the rubber gasket or ring. The cover C has lon lits under edge a seat for the gasket and-asapart of same an internal .depending .collar-or lip V. When the cover O is to be screwedfonto the bowl, the depending collar V vpassesdown over the shoulder S soclosely to itfasto reliably carry down the gasket before it and force the gasket and every part of it'` toits proper seat between the bowl and` the cover C. The gasket cannot remain or anyxpart of it between the collar V and-@the vertical portion lof the wall of the internal f eoverN, that constitutes the shoulder S, for

there is notspace enough left there forit.A 'lhere' is just enough space left to permit of thepassage ofthe skim-milk.

lThe operation of the apparatus of Figs. 1v

- to 4:is as follows: Thefull milk entering the separatingfchamber of thebowl through the .opeingsH at the point described is subjected there to the centrifugal force. Separation goeson'in all parts of this separating-chamber, in theparts radiallyinsidev of any one guiding-'plate K as Well as in the parts radirally outside ofthat guiding-plate. The heavier` ingredient resulting from the separation inside of `.theguiding-plate is deflectedby the guiding -plate from the natural (approximately radial) course that it would follow under the sole influence of centrifugal force and isby the double obliquity of the guidingfplatetol the radial lines of the vbowl kguided obliquely across the plate toward the periphery ofthe bowl. The lighter ingredient resultplate.

-ing from` the separationoutside of .the guiddouble Obliquity of the plates with respect t0 the radial lines of the bowl there will he one point of the platethat is nearer than any other to the axis of the, bowl, and at or near that point the cream should be released from restraint and permitted to flow to the creamwall, and toward that pointof release the cream-separated outside of the plate is guided in converging lines. Thus the separated or partly-separated skim-milk and cream are respectively guided on opposite sides ofthe guiding-plate in directions that laredoubly oblique to the radii of the bowl; but the cream is guided in lines that tend to converge along the length of the plate toward a .point of the plate, whereasv the skim-milk is guided in lines that do not ytend to converge, but that, on the contrary, at any given part of t-he plate are substantially parallel to leach other and obliquely approach'an edge or an end ofthe The skim-milk from the inner body of liquid is thus guided more quickly and more directly toward the periphery and with 'less interference with its natural bentunder drift, and the once separated constituents are kept'from in termixing. The separated skimmilk collecting at Athe periphery of'thebowl rises through the openings Wof thevrim of the internal cover or top piece N and passes between collar V and shoulder S` and is discharged through the skim-milk outlet D.

The internal cover or top piece'N is closed IOO IOS

IIO

on the under side to the outer spaces outside of the guiding-plates (except at R, as described) and is open to. the other or inner spaces. For the purposes of the broad claims herein made the cover N is not essentialy and may be present or absent, as desired.

The numberof guidingfplates in the liquidspace of the bowl may be varied.v Thus Fig. 5

shows an internal skimming device or frame intended fora large bowl and having four different inclosing sets of tive guiding-plates each in horizontal section,like four pen'tagons inscribed one within another, making a strong and compact construction. The guidingplates K of Fig. 5 each of them cuts obliquely a plane containing the axis ofy the bowl and alsocuts obliquely a plane passing through the axis of the bowl at a right angle. The

guiding plates `may be plane or slightly curved so long as `they are substantially plane and have the double obliquity described above, although I prefer in that regard the construction and arrangement shown in Fi gs. l to 5. Fig. 6 shows diagrammatcallya sectional view of different forms of plates when viewed in a plane containing the axis of the bowl. In that diagram the outer parallelogram indicates the bowl, the central vertical line its axis, and the horizontal lines its radii. Fig. 7 shows diagrammatically a sectional view of different forms of plates when viewed in a plane at right angles to the axis of the bowl. In that diagram the circle indicates the bowl, its center the axis of thel bowl, and the radial lines its radii. While I prefer that the point of the guiding-plate that is nearest to the center should be somewhere midway of its width (as is the casein all the guiding-plates shown in Figs. l to 5 and in those numbered 4, 5, and 6 shown in Fig. 7) rather than exactly at one edge or the other, as is the case with the plates numbered l, 2, and 3 of Fig. 7, still the latter form of guiding-plate could be used with some advantage and without departing from the spirit of my invention so far as concerns the broad claims herein made.

Figs. S and 9 showa form of device slightly modified from thatshown in Figs. 2, 3, and 4. The stayplates M are done away with and the internal cover N, as well as its conical upper part and its horizontal lower parts with cream-openings R, is done away with. In Figs. 8 and 9 Xis a thin centering-ring to center the upper part of the device in the bowl. Z is a rounded top or cover connecting the rounded or curved tops, of the plates K with one another and covering (except centrally) the space inside of the plates l. The spaces outside of the plates K have no cover whatsoever.

Fig. IO shows a construction like Fig. l except that the skim-milk openings P are omitted. The plates K in this instance are slightly raised from the false bottom G, as shown at I-I. In this case the skim-milk separated inside the plates passes out at the` bottom of the plates.

The use of the doubly-oblique plates or partitions of my invention develops a high skimming etliciency in the device as a whole, permitting of the reduction of the number of partitions to a minimum without reduction in g-chamberand speedy and efiicient removal of the separated ingredients.

Many changes in the forni and arrangement and size and degree of Obliquity of the guiding-plates might be made without departing from myinvention. Two or moreirames might be superposed one upon the other within the bowl. In the preferred form of my invention (for instance, as shown in Figs. l to et and Figs. 8 and 9) the frame encircles the bowl axis and might be described as composed of circumferentially-alternate sections, iirst of the faces of a pyramid whose axis coincides with the axis of the bowl, and, second, ofparts of a cylinder whose axis also coincides with that of the bowl.

For the purposes of the broad invention and claims the openings P might be omitted `so long as the separated skim-milk could properly escape.

What I claim as new, and desire to secure by Letters Patent, ist l. In a centrifugal separatiiig-machine, the combination with a bowl; of aseparatng device located in the liquid-space of the bowl and including one or more plates so located and arranged as to have asubstantially-plane portion thereofcut obliquely a plane containing the axis of the howl and also cut obliquely a plane passing through the axis of the bowl at a right angle.

2. In acentrifugal separating-machine, the combination with a bowl; .of a separating de-v vice located in the liquid-space of the bowl, and including one or more plates so located and arranged as to have a substantially-plane portion thereof cut obliquely a plane coutaining the axis of the bowl and also cut obliquely a plane passing through the axis of the bowl at a right angle, said separating device having a passage at the lateral edges of said plate or plates.

3. In acentrifugalseparating-machine, the combination with a bowl; of a separating device located in the liquid-space of the bowl andincludingoneormore plates solocatedand arranged as to have a substantially-plane portion thereof cut obliquely a plane containing the axis of the bowl and also cut obliquelya plane passing through the axis of the bowl at a right angle, said separating device having a passage at the lateral edges of said plate or.

plates, and said bowl having suitable means vfor feeding it arranged to deliver the liquid to be separated on the inner side of said plate or plates.

4. In a centrifugal separati iig-machine, the combination with a bowl; of aseparating de-V vice located in the liquid-space of .thefbowl and including one or more plates extending substantially from end to end of the `bowland so located and arranged as to have a substantially-plane portion thereof cut obliquely a plane containing the axis of the bowl and also cut obliquely a plane passing through the axis of the bowl at a right angle.

5. In a centrifugal separating-machine, the combination with a bowl; of a separating device located in the liquid-space of theV bowl IOO ICS

IIO

and including one or'more plates extending substantially fromy end to end of the bowl and f so located and arranged as to have a substantially-plane portion thereof c ut obliquely a `planecontaining the axis of the bowl and also cutV obliquely a plane passing through the axis of thebowl at a right angle, said` sepa- .s rating device having a passage at the lateral lOr edges ofk said plate or plates.

" 6. In a centrifugal separating-machine, the

v combination with `a bowl; of a separating device located in the liquid-space of the bowl and including one or more plates; extending substantially from end to end of the bowl and so located and arranged as to'have a substantially-plane portionthereof cut obliquely a plane containing the axis of the bowl and also cut obliquelya plane passing'through the axis of the bowl at a right angle, said separating device having a passage at the lateral edges of said plate or plates, and said bowl having suitable means for feeding it arranged to deliver the liquid to be separated on the inner side of `said plate or platess y 7. In a centrifugal separating-machine, the combination with a bowl; of afplurality of internal separating-frames concentrically ar ranged in theliquid-space of the bowland encircling the axis thereof, each of said frames having plaies each of which has a substan-v bowl and also cuts obliquely a plane passing through theaxis of the bowl at a right angle, said frames having passages at the llateral edges of the plates.

9. Ina centrifugal separating-machine the combination with a bowl; of a plurality of internal separating-frames con'centrically arranged in the liquid-space of the bowl and encircling the axis thereof, each of said frames having plates each of which hasa substantially-plane portion thereof which cuts obliquely a plane containing the vaxis of the bowl and also cuts obliquely a plane passing through the axis of the bowl at a right angle,. said bowl having suitable means .for feeding it atione end inside said frame and suitable means for discharging it at the other end.

ternal separating-frames concentrically arliqucly'a plane containing the axis of the 10. In acentrifugal separating-machine the combination with a bowl of a plurality of in-l bowl and-alsocuts obliquely a plane passing through the axis of the bowl at a right angle, said frames having passages at the lateral edges `of the plates, and said bowl having suitablemeans for feeding it at one end inside said frame and. suitable means for discharging it at the other end.

11. In a centrifugal separatingmachine the combination withabowl; of a plurality of internal separating-frames concentrically arranged in the liquid-spacev of the bowl and encircling the axis thereof, each of said frames having, plates extending substantially from end to end of the bowl each of which has a substantiallyplaneV portion thereof which cuts obliquely a plane containing the axis of the bowl and also cuts obliquely a plane passing through the' axis of the bowl at yaright angle. y l f y `12. In acentrifugalseparating-machinethe combination witha bowl; of a plurality of internal separating-frames concentrically arranged in the liquid-space of the bowl and encircling the axis thereof, each of said frames having plates extending substantiallyr from end to end of the` bowl each ofwhich has a substantially plane portion thereof which vcuts obliquely a plane containing the axis of the bowl and also cuts obliquely a plane passing through the axis of the bowl at a right angle, said frames having passages at the lateral edges of the plates. 13. In a centrifugal separating-machine the IOC combination withabowl; of a plurality of intern al"'separatiug frames i concentrically arranged in the liquid-space of the bowl and encircling the' axis thereof, each of said frames having plates extending substantially from end to end ofl the bowl eachy of which has a substantially plane y portion thereof which cut-s obliquely a plane containing the axis of the bowl and also cuts obliquely a plane passing through the axis of the bowl at a right angle, said frameshaviug passages at the lateral edges'of the plates, and said bowl having suitable means for feeding it at one end inside said frame and suitable'means for discharging it at the other end.

14. In a centrifugal creaming-machine, the combination, substantially as described, with a bowl and a cover adapted to be secured to vthe bowl and a. suitable rubber gasket and seat for same, the cover having adepending collanV, of an internal skimming device or lframe having a suitable .cover or top piece,

saidinternal cover having the shoulder S,

. whereby the rubber' gasket is readily and reliably forced to its proper seat and the parts are reliably secured together for use.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

vOVLOF OHLSSON.

Witnesseis.

EDWIN SEGER, Y NICHOLAS N. GoopLET'r, Jr. 

